Roller-die.



No. 761,792. PATENTED JUNE 7, 1904.

- 0. H. SUCH & T. HEATH.

ROLLER DIE.

c 7 APPLICATION rnnn 0012s. 1902. nnnswnn NOV. 7. 1903.

N0 MODEL.

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I 1 y V 4 UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

CHARLES H. SUCH AND THOMAS HEATH, OF PROVIDENCE, RHODE ISLAND.

. ROLLER-DIE.

SPECIFICATION forming part of Letters Patent No. 761,792, dated June 7,1904.

Application filed October 28, 1902. Renewed November 7, 1903. SerialNo.180,2'79. (No model.)

To all whom, it may concern:

. Be it known that we, CHARLES H. SUCH, a citizen of the United States,and THOMAS HEATH, a

subject of the King of Great Britain, both residing at Providence, inthe county of Provi-- dence and State of Rhode Island, have inventedcertain new and useful Improvements in Roller-Dies, of which thefollowing is a specification.

Our invention relates to rolls adapted to figure stock for use-injewelry, silverware, and kindred trades. i

Heretofore it has been customary to provide the periphery of roller-diesintended for the purpose specified with an engraved figure intended fortransfer to the stock fed. In such cases the effects attainedv have beensatisfactory when it only desired that the entire face of a flat stripof metal be ornamented; but such figured stock is seldom or everdemanded in the arts at present, but rather an ornamented strip whosemargins shall be irregular to conform to the outline of theornamentation of the strip. The method in vogue formaking this stock isto put it through rolls whose peripheries bear a centr al annularornamentation, but which are otherwise blank. The wire after subjectionto this operation is of substantially uniform thickness throughout, andthere are blank margins upon each side of the ornamentation. It is nextnecessary to trim away these margins, which is done by means of a gangof punches specially cut to conform in each instance to a section ofeach particular design which it is desired to segregate. This methodobviously involves great expense and labor and frequently work ofinferior appearance.

Our invention is purposed to eliminate the necessity of the expensivestep of cutting above outlined by means of a specially-con structed rollhereinafter described, and illustrated in theaccompanying drawings,where- 1n Figure l is a perspective view of an ordinary strip of flat orgraded stock prior to passage through the rolls; Fig. 2, a similar viewof the same after passage through the rolls and after the blank marginalportions have been partially removed from the ornamental portion, andFig. 3 is a side elevation of our new roll mounted upon an arboroperating in conjunction with a flat roll upon a flat or graded strip ofstock.

Like letters of reference indicate like parts throughout the views.

Our roll -A is provided with flat annular marginal shoulders a a.Intermediate these the periphery bears the annular depressed cutting ofwhatever ornamentation b is desired. The marginal edges of the annularornamentation c are peculiar in that they are themselves cutters. Thiscutting effect is attained by inclining those portions of theroll-periphery 0? intermediate the ornamentation 5 and the shoulders aupwardly in such a manner that their surfaces if continued wouldconverge. The intersection of the surfaces (Z with the marginal lines 0of the ornamentation, which is vertically cut, produces twoupwardly-directed acute angles or cutting edges 0 in the same or aslightly lower horizontal plane thanthat of the flat annular shouldersa. The effect of this roll upon the stock is shown in Fig. 3, whereinour newroll A, splined upon an arbor B, rotates in conjunction with acompanion roll C, whose surface bears upon the surfaces of the shouldersa and upon the surface of the strip of stock D which is being fed to therolls.

The result of the interaction of the rolls'A and C upon the blank isshown in Fig. 2 to be a central ornamented strip flanked on either sideby marginal stripsf. It will be noted that these marginal strips whilethick at their outer edges are extremely thin ad a- I cent theornamented strip or in places entirely P severed therefrom.

To complete the wire requires only that the marginal or waste strips fbe severed from the ornamented strip 6 by manually tearing or breakingthe former from the latter, which operation is shown in progress in Fig.2.

Having thus described our new roll, we claim as new and desire to secureby Letters Patent 1. In a roller-die, the combination with an annularchannel of an ornament recessed in line constitutes a cutting edge, of atransversely-inclined annular surface extending dmvnwardly and from thecutting edge toward the face of the die, and annular peripheralshoulders on each side of the annular figure.

In testimony whereof we have afiixed our signatures in presence of twowitnesses.

CHARLES II. SUCH. THOMAS ll lCA'll l. Witnesses:

HonA'rIo E. BuLLows, EBENEZER UALLAIIAN.

